Node.js

How to Download Messages in MessageSet One at a Time

See more IMAP Examples

If a message set contains a huge number of emails, it's NOT a good idea to try to download all at once into an email bundle using a method such as FetchBundle. It's better to iterate over the messages in the set to download one by one. Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    var imap = new chilkat.Imap();

    // Connect using TLS.
    imap.Ssl = true;
    imap.Port = 993;
    success = imap.Connect("imap.example.com");
    if (success == false) {
        console.log(imap.LastErrorText);
        return;
    }

    // Authenticate
    success = imap.Login("email_account_login","email_account_password");
    if (success == false) {
        console.log(imap.LastErrorText);
        return;
    }

    // Select an IMAP mailbox
    success = imap.SelectMailbox("Inbox");
    if (success == false) {
        console.log(imap.LastErrorText);
        return;
    }

    // Search for messages and return a set of matching messages.
    // (This example will simply search for ALL messages.)
    var fetchUids = true;

    var messageSet = new chilkat.MessageSet();
    success = imap.QueryMbx("ALL",fetchUids,messageSet);
    if (success == false) {
        console.log(imap.LastErrorText);
        return;
    }

    console.log("Number of messages = " + messageSet.Count);

    var email = new chilkat.Email();
    var i = 0;
    while (i < messageSet.Count) {
        success = imap.FetchEmail(false,messageSet.GetId(i),fetchUids,email);
        if (success == false) {
            console.log(imap.LastErrorText);
            return;
        }

        console.log(email.From + "; " + email.Subject);

        i = i+1;
    }

    console.log("OK");

}

chilkatExample();